I was very surprised how fast Everything was when indexing my hard disk. I was expecting that it would scan recursively through my HDD folders which would take at least 10 minutes. Instead of this, it was finished indexing after a few seconds.

Am I right that this is because Everything uses the USN Journal Log? But if this is true then wouldn't it mean that Everythings database is incomplete if the journal log was already truncated before (e.g. because it had reached its maximum size before)???

Or is there some kind of other index file entry in NTFS that avoids this?